patch 8.1.1676: "maxwidth" of popup window does not always work properly

Problem:    "maxwidth" of popup window does not always work properly.
Solution:   Adjust the computation. (Naruhiko Nishino, closes #4653)
diff --git a/src/version.c b/src/version.c
index 7e3c180..c4fee1c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1676,
+/**/
     1675,
 /**/
     1674,